/*Copyright 2009,2010 Alex Graves

This file is part of RNNLIB.

RNNLIB is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

RNNLIB is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with RNNLIB.  If not, see <http://www.gnu.org/licenses/>.*/

#ifndef _INCLUDED_IdentityLayer_h
#define _INCLUDED_IdentityLayer_h

#include "Layer.hpp"
#include "Helpers.hpp"

struct IdentityLayer: public FlatLayer {
  //functions
  IdentityLayer(const string &name, size_t numSeqDims, size_t size):
    FlatLayer(name, numSeqDims, size) {
    display(this->outputErrors, "errors");
    display(this->outputActivations, "activations");
  }
  IdentityLayer(const string &name, const vector<int> &directions, size_t size):
    FlatLayer(name, directions, size) {
    display(this->outputErrors, "errors");
    display(this->outputActivations, "activations");
  }
  void feed_forward(const vector<int> &coords) {
    copy(this->inputActivations[coords], this->outputActivations[coords]);
  }
  void feed_back(const vector<int> &coords) {
    copy(this->outputErrors[coords], this->inputErrors[coords]);
  }
};

#endif
